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# Senior Javascript Software Engineer

- **Company:** Jobtailor
- **Location:** Madrid, Spain
- **Contract:** Permanent contract
- **Skills:** JavaScript (Programming Language), Amazon Web Services, Amazon Elastic Compute Cloud, Code Review, Software Debugging, Distributed Systems, Amazon DynamoDB, Node.Js, Performance Tuning, Amazon Simple Notification Service (SNS), Software Engineering, Systems Integration, Spring Cloud, AWS Lambda, Backend, Front End Software Development, Asynchronous Programming, Functional Programming, Restful APIs, Amazon Simple Queue Service (SQS), Data Pipelines, Serverless Computing
- **Published:** August 15, 2026
- **Apply:** https://www.buscojobs.com.es/senior-javascript-software-engineer-en-madrid-ID-367429882

## About the Role

+5 years of experience working as a Frontend Engineer.
Strong experience with Node.js and backend application development.
Hands?on experience with AWS, including: EC2, Lambda, SQS, SNS, DynamoDB.
Experience designing and developing scalable distributed systems.
Knowledge of asynchronous programming and event?driven architectures.
Experience building RESTful APIs and backend integrations.
Strong problem?solving and debugging skills.
Excellent communication and collaboration skills.
Core Competencies Demonstrates expertise in designing and developing scalable backend services using Node.js and AWS technologies, including serverless architectures and event?driven systems.
Strong problem?solving abilities and effective collaboration skills are essential for delivering high?performance applications.
#J-*****-Ljbffr

## Description

Responsibilities- Design, develop, and maintain scalable backend services using Node.js.- Build and optimize cloud-native applications on AWS.- Develop and maintain event-driven and messaging-based architectures using SQS and SNS.- Design and manage serverless solutions with AWS Lambda.- Work with DynamoDB to build high-performance, scalable data solutions.- Collaborate with cross-functional teams to deliver reliable, low-latency backend services.- Monitor, troubleshoot, and optimize system performance, availability, and scalability.- Participate in code reviews and contribute to engineering best practices.Requirements+5 years of experience working as a Frontend Engineer.Strong experience with Node.js and backend application development.Hands?on experience with AWS, including: EC2, Lambda, SQS, SNS, DynamoDB.Experience designing and developing scalable distributed systems.Knowledge of asynchronous programming and event?driven architectures.Experience building RESTful APIs and backend integrations.Strong problem?solving and debugging skills.Excellent communication and collaboration skills.Core Competencies Demonstrates expertise in designing and developing scalable backend services using Node.js and AWS technologies, including serverless architectures and event?driven systems.Strong problem?solving abilities and effective collaboration skills are essential for delivering high?performance applications.#J-*****-Ljbffr


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